The hectare is the metric unit of land. It is also called square hundred meters and square hectares (easy to remember and convert), and the unit symbol of hectares is hm? Where hm stands for 100 meter, huh? It means 1 000 square meters, which means 10000 square meters, which means1hectare. In addition, hectares can also be represented by ha, which is the English abbreviation of area unit hectare. There are three types of land area units in China, with square meters (m? ), hectares (hm? ) and square kilometers (km? ), the area conversion is as follows:

1 cm2 = 100 mm2 =0. 1550 in2.

1 square meter = 10000 square centimeter = 1. 1960 square yard.

1 hectare =15mu =10000m2.

1 mu = 666.67m2.

1 ha =10000m2 = 2.445438+0 1 mu.

1 square kilometer = 100 hectare = 0.385438+0 square mile.

Regional introduction

The size of the plane figure occupied by objects is called their area. Area is the size of the plane figure, square meter, square decimeter and square centimeter, which is a recognized unit of area and can be expressed as (m? ，dm？ ，cm？ )。

Area is a quantity indicating the degree of two-dimensional figure or shape or plane layer in a plane, and surface area is the simulation of three-dimensional objects on a two-dimensional surface. Area can be understood as the amount of material with a given thickness, which is necessary to form a shape model. The area of a shape can be measured by comparing a shape with a square.

In the International System of Units (SI), the standard unit area is square meters, the square area is one meter long, and the shape of three square meters will be the same as three such squares. In mathematics, the unit square is defined as 1, and the area of any other shape or surface is a dimensionless real number.